Input prompt box renders as dark background in Light Themes (Solarized Light) over SSH to Windows

What version of Codex CLI is running?

codex-cli 0.140.0

What subscription do you have?

Plus

Which model were you using?

_No response_

What platform is your computer?

Darwin 25.5.0 arm64 arm / Microsoft Windows NT 10.0.26100.0 x64

What terminal emulator and version are you using (if applicable)?

VS Code/Ghostty

Codex doctor report

What issue are you seeing?

In recent versions of codex, when connecting to a Windows Server via SSH from a macOS/Linux terminal, the chat input prompt window renders with a solid dark/black background. This happens even when the terminal emulator is using a Light Theme (such as Solarized Light), making the text hard to read or visually disruptive.

This seems to be a regression, as this behavior did not occur in older versions of codex under the exact same environment.

<img width="635" height="240" alt="Image" src="https://github.com/user-attachments/assets/fb39255b-0e50-4a1d-8227-166dc2398ea2" />

<img width="1068" height="424" alt="Image" src="https://github.com/user-attachments/assets/31893468-cc0f-4179-bdca-23bdfee78a59" />

What steps can reproduce the bug?

1. Use a macOS terminal emulator (e.g., Ghostty or VS Code built-in terminal) configured with a Light Theme (Solarized Light).
2. SSH into a Windows Server using standard SSH commands, or explicitly forcing terminal environment variables:

   ssh user@server
   # OR
   ssh -o SetEnv="TERM=xterm-256color COLORTERM=truecolor" user@server

What is the expected behavior?

_No response_

Additional information

_No response_